Fiber debonding along a crack front in paper
Book
·
OSTI ID:364062
- KCL, Espoo (Finland). Paper Science Centre
The authors follow the accumulation of microscopic damage ahead of the crack tip in paper. The fiber debonding process varies even within each specimen because of large variation in fiber and bond properties. In general, stiff and weakly bonded fibers tend to debond as a rigid body while ductile or well bonded fibers pull out gradually in a process that propagates from the crack line to the fiber ends. Particularly in the latter case the network ruptures coherently rather than through debonding of single fibers. Experimental analysis and simulations show that fracture energy correlates closely with the size of the fracture process zone (FPZ) irrespective of the nature of the debonding process. Only the cases of low bonding and stiff fibers seem to make an exception in that FPZ can grow in size without a corresponding increase in fracture energy.
- OSTI ID:
- 364062
- Report Number(s):
- CONF-981104--
- Country of Publication:
- United States
- Language:
- English
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